Impact of Self-Cleaning Energy-Efficient Glass on Building Energy Performance

  • Amal Alkindi

    Student thesis: Master's Thesis

    Abstract

    The development of multi-functional glass has gained significant interest in the past years, both in academic circles and the construction industry. For building applications, two glazing properties that are increasingly studied are energy efficiency and self-cleaning. However, a review of the literature indicates that the two properties are often studied independently. The purpose of this work is to investigate the energy-saving potential of multifunctional self-cleaning energy-efficient glazing for buildings developed at Khalifa University. Using Building Performance Simulation (BPS), seventy-two different scenarios of glazing are simulated, covering various layer configurations (single, double, and triple), thicknesses (2 mm, 6 mm, and 12 mm), and types of deposited layers (TiO2, Cu-TiO2, and WO3). The different combinations are tested on archetype (i.e., typical) small, medium, and large office buildings located in an extremely hot climate environment. Significant energy savings are observed when comparing the tested glass configurations to the base case (i.e., reference) clear glass. The savings are particularly significant for the WO3 triple glazing configuration, exceeding 7% for the total building loads and 14% for the cooling loads. However, the low visual transmittance of WO3 led to an increase in lighting loads, reaching 4% in some cases. The observed interaction and tradeoff and between the cooling and lighting loads need to be further investigated in the future, along with additional building performance metrics such as the thermal and visual comfort levels of occupants.
    Date of AwardDec 2019
    Original languageAmerican English

    Keywords

    • multi-functional glazing
    • energy efficiency
    • self-cleaning glazing
    • building performance simulation

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